To provide theoretical basis for the water-saving, high-yield and good quality cultivation techniques of drip-irrigated winter wheat, the wheat cultivar 'Xindong 22' was adopted as the test material, and five irrigation amounts including 3150 (W), 3900 (W), 4650 (W), 5400 (W) and 0 (CK) m·hm were adopted to investigate effects of drip irrigation amount on grain filling dynamics and quality traits in 2012-2013 and 2013-2014 wheat growing seasons in Xinjiang. Results indicated that the grain-filling dynamics of drip-irrigated winter wheat in different treatments presented the "S" shape curve, and accorded with the Logistic model with high fitting degree. The fast increase period of wheat grain-filling was measured at 12-20 days after anthesis. The maximum filling rate (V) increased at first and decreased later with the increase of drip irrigation amount, and was obtained in the treatment W in the two seasons, which was 2.16 g·d and 2.59 g·d , respectively. With the increase in drip irrigation amount, the bulk mass, protein content, flour extraction rate, wet gluten content, dough stability time, degree of softening, dough extension resis-tance and draw ratio of the drip-irrigated wheat firstly increased and decreased later, and the maxima of these indexes were measured in W. However, the water absorption rate and extensibility of dough initially decreased and then increased, and the minimum was obtained in the treatment of W. The sedimentation value increased gradually and the dough development time decreased progressively. Treatment W had the highest grain yield of 8913 kg·hm in 2013 and 8602 kg·hm in 2014, which was 25.0%, 14.8%, 4.4%, 35.6% and 12.4%, 2.8%, 1.1%, 33.0% higher than the treatments of W, W, W and CK in 2013 and 2014, respectively. In conclusion, drip irrigation of 4650 m·hm during the whole growing season of winter wheat could realize the target of high-yield and good quality in local natural condition.
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